CN105840428B - A kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap - Google Patents
A kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap Download PDFInfo
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- CN105840428B CN105840428B CN201610162515.0A CN201610162515A CN105840428B CN 105840428 B CN105840428 B CN 105840428B CN 201610162515 A CN201610162515 A CN 201610162515A CN 105840428 B CN105840428 B CN 105840428B
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000010355 oscillation Effects 0.000 description 1
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- 230000000192 social effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The present invention provides a kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap.Vertical axis aerogenerator of the present invention, because using adaptive variable pitch vertical shaft wind force driving device of the blade with wing flap, it is characterised in that：With rotary unit and adjust unit, adjust the bracket assembly lower part that rotary unit is arranged in unit, including grooved tracks, sliding block and crank, sliding block slides in grooved tracks, by the guiding of groove, drives crank rotation, and certain angle is deflected by crank handle turns blade flap automatically, so can actively change blade actual angle of attack.Therefore adaptive variable pitch vertical shaft wind force driving device of the blade with wing flap, which has, improves blade stall characteristic, improves the characteristic of blade aerodynamic performance and wind energy utilization.
Description
Technical field
The invention belongs to wind power generation fields, are related to a kind of adaptive variable pitch vertical shaft wind power drive dress of the blade with wing flap
It sets.
Background technique
Wind Energy In China is resourceful, greatly develop wind-power electricity generation to readjust the energy structure, ensure energy security, reply weather
Variation and promote the sustainable development of socio-economy be of great significance, wherein wind energy conversion system as wind-power electricity generation key equipment for
China's Wind Power Development plays effect of crucial importance.However, the vertical axis windmill angle of attack makes blade at the characteristics of cyclically-varying
Dynamic stall characteristic is obvious, and wind energy conversion system aeroperformance is affected, and structural stability and capacitation efficiency are to be improved.
When pneumatic equipment bladess rotation, blade actual angle of attack changes.When attack angle of blade is negative angle of attack, blade is generated
Torque direction is opposite to the direction of rotation；When the angle of attack of blade increases to stall angle, gas is no longer attached to blade table surface current
It crosses, flow separation will occur in blade suction surface, and vortex, i.e., so-called " stall " phenomenon occur in the trailing edge of suction surface.Wind
When power machine is in stall conditions, not only reduces blade aerodynamic efficiency, influences wind energy conversion system energy capture, but also noise can increase suddenly
Greatly, phenomena such as and causing the vibration and fluctuation of service of pneumatic equipment bladess.Therefore it is special to improve pneumatic equipment bladess stall as much as possible
Property, increase wind energy conversion system acting range to improve wind energy conversion system operational efficiency with important social effect and economic significance.
Through retrieving, pneumatic equipment bladess stalling characteristics are mainly improved using passive control mode at present.One kind having stall tune
Wind power generating set (the application number of section：20132055243.1), by adjusting the axis of oscillation of axis of runner blade and mounting plate, make
Its side windward guarantee it is at an acute angle come achieve the purpose that adjust stall, but at this time blade profile shape be non-aerofoil profile it is streamlined,
Aeroperformance not can guarantee.
As cost needed for enlargement is gradually presented in wind energy conversion system, large capacity development trend, stall passively control constantly increases.
By the way of adaptive, production principle based on stall and lead to the reasons such as wind energy conversion system fluctuation of service, takes corresponding design
The stalling characteristics and stability for improving wind energy conversion system seem most important for wind energy conversion system stall-adjusted and stable and high effective operation.
Summary of the invention
The present invention is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of adaptive strain of blade with wing flap
Paddle vertical axis aerogenerator, to solve the problems such as vertical axis windmill pneumatic efficiency is low and opening property is poor certainly.
The present invention to achieve the above objectives, uses following technical solution：
A kind of adaptive variable pitch vertical shaft wind force driving device the present invention provides blade with wing flap is mounted on wind-force hair
It generates electricity on motor for driving the rotary shaft of generator to rotate, which is characterized in that have:Rotary unit, including：Output shaft,
With rotation axis connection；Bracket assembly is fixed on output shaft, for driving output shaft to rotate, plurality of vanes component, respectively
It is mounted in the outer rim of bracket assembly；Wherein, blade assembly includes：Blade body is fixedly mounted on the outer of bracket assembly
On edge, blade body is inwardly provided with notch from edge, and one end of notch is formed at the top of blade body, and the other end of notch forms leaf
The axis that piece bottom part body, blade body top and bottom part body are parallel to blade body is respectively arranged with top through-hole and bottom
Through-hole, top through hole center line and bottom through-hole center line are overlapped, and blade rotor passes through top through-hole and bottom through-hole and blade
Body rotation connection, blade flap are fixedly connected with blade rotor, are mounted in the notch of blade body by blade rotor, leaf
Piece wing flap is rotated by blade rotor, and blade rotor center line and output shaft centre line are in one plane；And unit is adjusted,
Setting is in bracket assembly lower part, and for adjusting the angle of blade flap Yu blade rotor center line, adjusting unit includes：Rail
Road, oval, around output shaft and setting is in bracket assembly lower part, and sliding block engages and slides in orbit and in orbit,
There are top axle, crank in slider top center, and one end and the blade rotor of crank are fixedly linked, the other end by slider top axis with
Sliding block is flexibly connected, for adjusting the angle of blade flap and blade rotor.
In vertical shaft wind force driving device of the invention, it can also have the feature that：Wherein, the cross section of track
In " C " font.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, support frame
Component includes the lower bracing frame of one with parallel track, and lower bracing frame is fixedly connected by way of engaging with output shaft.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, support frame
Component further includes the upper support frame being oppositely arranged with lower bracing frame, and upper support frame is fixed by way of engaging with output shaft
Connection.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, support frame
Component also includes at least the middle support frame being oppositely arranged with lower bracing frame, and middle support frame is with output shaft by way of engaging
It is fixedly connected.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, blade master
Body is prismatic blade.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, blade master
The cross section of body is symmetrical airfoil.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, blade master
The cross section of body is asymmetric airfoil.
In addition, can also be had the feature that in vertical shaft wind force driving device of the invention：Wherein, the blade flap
When the wing is optimal rotational angle, the mathematics of orbit track, crank length and output shaft centre line to blade rotor center line
Relational expression is：
β-propeller pitch angle (°)；
The linear distance (m) of AC-orbital groove center line and output shaft centre line；
AD-output shaft centre line and blade rotor center line linear distance (m)；
The linear distance (m) of CD-slider top axis center line and blade rotor center line.
A kind of adaptive variable pitch vertical axis aerogenerator the present invention provides blade with wing flap, which is characterized in that tool
Have:Vertical shaft wind force driving device, has output shaft, and generator has rotary shaft, is connected with exporting axis, rotary shaft is by vertical
Axis wind force driving device drives rotation and generates electricity.
Wherein, vertical shaft wind force driving device is adaptive variable pitch vertical shaft wind force driving device of the blade with wing flap.
The action and effect of invention
Vertical axis aerogenerator according to the present invention, because using the vertical axis of adaptive variable pitch of the blade with wing flap
Wind force driving device is provided in the bracket assembly lower part of wind force driving device and adjusts unit, and adjusting unit includes groove tracks
Road, sliding block and crank, sliding block slide in grooved tracks, by the guiding of groove, drive crank rotation, and by crank handle turns leaf
Piece wing flap deflects certain angle automatically, so can actively change blade actual angle of attack, therefore adaptive variable pitch of the blade with wing flap
Vertical shaft wind force driving device has improvement blade stall characteristic, improves the characteristic of blade aerodynamic performance and wind energy utilization.
Detailed description of the invention
Fig. 1 is the schematic diagram of vertical axis aerogenerator of the present invention；
Fig. 2 is the perspective view of vertical shaft wind force driving device of the present invention in embodiment；
Fig. 3 is a kind of three-dimensional scheme of installation of blade assembly in vertical shaft wind force driving device of the present invention；
Fig. 4 is vertical shaft wind force driving device middle period piece lower end connection type partial enlargement diagram A of the present invention；
Fig. 5 is A-A cross-section diagram shown in Fig. 4；
Fig. 6 is sliding block and crank connection schematic diagram in vertical shaft wind force driving device of the present invention；Fig. 7 is the present invention
The vertical shaft wind force driving device middle orbit groove section figure being related to；
Fig. 8 is eccentric trajectory calculation schematic diagram in vertical shaft wind force driving device of the present invention.And
Fig. 9 is that wing flap swings schematic diagram in vertical shaft wind force driving device of the present invention.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to be specifically addressed vertical shaft wind force driving device of the present invention.
Fig. 1 is the schematic diagram of vertical axis aerogenerator of the present invention.
As shown in Figure 1, vertical axis aerogenerator 100 has:Vertical shaft wind force driving device 10 and and vertical shaft wind
The generator 20 that force driving device 10 connects.Generator 20 has rotary shaft 21.
Fig. 2 is the perspective view of vertical shaft wind force driving device of the invention in embodiment.
As shown in Fig. 2, vertical shaft wind force driving device has:Rotary unit 11 and adjusting unit 12；Rotary unit 11 wraps
Include output shaft 111, bracket assembly 112, plurality of vanes component 113, key 114；Wherein, output shaft 111 are located at rotary unit
11 center.
As shown in Figure 1, output shaft 111 is connected with 20 rotary shaft 21 of generator.
As shown in Fig. 2, bracket assembly 112 is fixed on output shaft 111, it includes upper support frame 112a, lower bracing frame
112b and middle support frame 112c, upper support frame 112a, lower bracing frame 112b and middle support frame 112c be in spoke shape, respectively with it is defeated
Shaft 111 is fixedly connected in a manner of engaging key 114, and plurality of vanes component 113 is separately mounted to bracket assembly
In 112 outer rim, blade assembly 113 includes：Blade body 113a, blade flap 113b, blade rotor 113c, blade body
113a is fixedly mounted in the outer rim of bracket assembly 112.
As shown in figure 3, blade body 113a is inwardly provided with notch from edge, one end of notch is formed at the top of blade body,
The other end of notch forms blade body bottom, and the axis for being parallel to blade body with bottom part body at the top of blade body is set respectively
It is equipped with top through-hole and bottom through-hole, top through hole center line and bottom through-hole center line are overlapped.Blade master in the present embodiment
The axis of body is parallel to output shaft centre line.
Blade rotor 113c is rotatablely connected by top through-hole and bottom through-hole and blade body 113a, blade flap 113b
It is fixedly connected with blade rotor 113c, is mounted in the notch of blade body by blade rotor, blade flap is turned by blade
Axis rotation, blade rotor center line and output shaft centre line are in one plane；Key 114 is located at output shaft 111 and upper branch
Connection function is played in the engaging portion of support 112a, output shaft 111 and lower bracing frame 112b, output shaft 111 and middle support frame 112c.
Adjusting unit 12 includes orbital groove 121, sliding block 122, crank 123.Wherein, orbital groove 121, it is oval,
Around output shaft 111 and setting is in the lower part lower bracing frame 112b, and sliding block 122 is fastened in track 121 and sliding in track 121
Dynamic, 122 top center of sliding block has top axle.
As shown in fig. 7, orbital groove inward flange has protrusion, it can the movement of anti-limited slip block 122 in vertical direction.
As shown in figure 4, one end of crank 123 is fixedly linked with blade rotor 113c, the other end is connected with sliding block 122, uses
In the angle of adjustment blade flap 113b and blade rotor 113c.
As shown in figure 5, wing flap 113b is adaptive to be rotated around blade rotor 113c when wind force driving device rotation, it will
Actual angle of attack is adjusted to optimal attack angle.
As shown in fig. 6,122 top center of sliding block has top axle, crank 123 is connected with sliding block 122 by top axle, two
Person rotates without relative translational movement freedom degree, crank 123 around 122 top axle of sliding block.
As a kind of deformation, blade body 113a is prismatic blade, and cross section is asymmetric airfoil.
As shown in Fig. 2, using six blade vertical shaft wind force driving devices as the schematic objects of the specific embodiment of the invention.
When carrying out wind and blowing from any direction, blade body 113a and blade flap 113b are pushed blade integrally clockwise by aerodynamic force
Rotation, bracket assembly 112 are fixedly connected with blade body 113a, and therefore, bracket assembly 112 will rotate clockwise, support
It being connected between frame component 112 and output shaft 111 by key 114, output shaft 111 is supported the promotion of frame component 112 and rotates clockwise,
So as to drive electrical power generators.
Blade rotate integrally during, due to blade rotor 113c be connected to blade body 113a, blade flap 113b and
Crank 123, and freedom degree without spin between blade rotor 113c and crank 123, as blade body 113a and blade flap 113b
When being rotated clockwise by Aerodynamic force action, crank 123 will be done rotation counterclockwise by the blade rotor 113c active force transmitted
Trend.Crank 123 is connected with sliding block 122, and the two will be around the 122 top axle inverse time of sliding block without relative translational movement freedom degree, crank 123
Needle rotation.After blade body 113a and blade flap 113b is around 111 turns of any rotations of output shaft, the translation of crank 123 position
Shifting changes, and sliding block 122 will be pushed to slide in orbital groove 121.Since the motion profile of sliding block 122 is by orbital groove
121 constraint is not consistent with the translation of crank 123 track.Therefore, crank 123 is influenced to push up around sliding block 122 by the track of sliding block 122
The rotation of portion's axis.At this point, crank 123 will drive blade flap 113b to rotate by a certain angle around blade rotor 113c center line, thus
Change the pneumatic angle of attack, achieve the purpose that adaptively to swing, improves aerodynamic force output.
The rule of adaptive variable pitch is by the track of grooved tracks 121,123 length of crank and output shaft centre line to leaf
The influence of the linear distance of piece shaft centerline.The mathematical relationship between above three factor can be constrained by mathematical computations, from
And determine the angle that blade flap 113b is rotated in rotary course, to obtain the pneumatic angle of attack of global optimum's dynamic.
In formula：
β-propeller pitch angle (°)；
Linear distance (m) of the AC-orbital groove center line to output shaft centre line；
Linear distance (m) of the AD-output shaft centre line to blade rotor center line；
The linear distance (m) of CD-slider top axis center line and blade rotor center line.
As shown in figure 8, A is the point exported on shaft centre line；C is the point on elliptic orbit groove center line；D turns for blade
Point on shaft centre line.AC is linear distance of the elliptic orbit groove center line to output shaft centre line；AD is output axis center
Linear distance of the line to blade rotor center line；CD is the linear distance of slider top shaft centre line and blade rotor center line.
The action and effect of embodiment
The vertical shaft wind force driving device of adaptive variable pitch of the blade according to the present invention with wing flap, have rotary unit and
Unit is adjusted, adjusts unit because being provided in bracket assembly lower part, after blade rotates any angle around output shaft, crank
Translation displacements change, and sliding block will be pushed to slide in orbital groove.Due to constraint of the motion profile by groove of sliding block,
It is not consistent with crank translation track.Therefore, crank is influenced to rotate around slider top axis by the track of sliding block, at this point, crank is by band
Movable vane piece wing flap rotates by a certain angle around blade rotor center line, to change the pneumatic angle of attack, achievees the purpose that adaptive variable pitch,
Blade stall characteristic is improved, blade aerodynamic performance and wind energy utilization are improved.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
Claims (10)
1. a kind of adaptive variable pitch vertical shaft wind force driving device of blade with wing flap is mounted on wind-driven generator for driving
The rotary shaft of generator is rotated and is generated electricity, which is characterized in that is had:
Rotary unit, including：
Output shaft, and the rotation axis connection,
Bracket assembly is fixed on the output shaft, for driving the output shaft to rotate,
Plurality of vanes component is separately mounted in the outer rim of support frame as described above component,
Wherein, the blade assembly includes：
Blade body is fixedly mounted in the outer rim of support frame as described above component, and the blade body is inwardly provided with notch from edge,
One end of the notch is formed at the top of blade body, and the other end of the notch forms blade body bottom, the blade body
The axis that top and the bottom part body are parallel to the blade body is respectively arranged with top through-hole and bottom through-hole, the top
Portion's through hole center line and the bottom through-hole center line are overlapped,
Blade rotor is rotatablely connected by the top through-hole and the bottom through-hole and the blade body,
Blade flap is fixedly connected with the blade rotor, is mounted in the notch by the blade rotor, the blade
Wing flap is rotated by the blade rotor, and the blade rotor center line and the output shaft centre line are in one plane；With
And
Unit is adjusted, is arranged in support frame as described above component lower part, for adjusting the blade flap and the blade rotor center
The angle of line,
The adjusting unit includes：
Track, it is oval, around the output shaft and it is arranged in support frame as described above component lower part,
Sliding block is fastened in the track and in the gliding in tracks, and there is top axle at the slider top center,
Crank, one end of the crank are connected with the blade rotor, and the other end is connected by the top axle with the sliding block,
For adjusting the angle of the blade flap Yu the blade rotor center line.
2. wind force driving device according to claim 1, it is characterised in that：
Wherein, the cross section of the track is in " C " font.
3. wind force driving device according to claim 1, it is characterised in that:
Wherein, support frame as described above component includes the lower bracing frame of one with the parallel track, the lower bracing frame with it is described defeated
Shaft is fixedly connected by way of engaging.
4. wind force driving device according to claim 3, it is characterised in that:
Wherein, support frame as described above component further includes the upper support frame being oppositely arranged with the lower bracing frame, the upper support
Frame is fixedly connected by way of engaging with the output shaft.
5. wind force driving device according to claim 3, it is characterised in that:
Wherein, support frame as described above component also includes at least the middle support frame being oppositely arranged with the lower bracing frame, it is described in
Support frame is fixedly connected by way of engaging with the output shaft.
6. wind force driving device according to claim 1, it is characterised in that:
Wherein, the blade body is prismatic blade.
7. wind force driving device according to claim 6, it is characterised in that:
Wherein, the cross section of the blade body is symmetrical airfoil.
8. wind force driving device according to claim 6, it is characterised in that:
Wherein, the cross section of the blade body is asymmetric airfoil.
9. wind force driving device according to claim 1, it is characterised in that:
Wherein, when the blade flap is optimal rotational angle, the orbit track, the crank length and the output
The relationship of shaft centre line to the blade rotor center line is：
β-propeller pitch angle (°)；
The linear distance (m) of the AC-orbital groove center line and the output shaft centre line；
The linear distance (m) of the AD-output shaft centre line and the blade rotor center line；
The linear distance (m) of the center line of the CD-top axle and the blade rotor center line.
10. a kind of adaptive variable pitch vertical axis aerogenerator of blade with wing flap, which is characterized in that have:
Wind force driving device has output shaft,
Generator has rotary shaft, is connected to the output shaft, adaptive variable pitch of the rotary shaft by the blade with wing flap
Vertical shaft wind force driving device drives rotation and generates electricity,
Wherein, the wind force driving device is wind force driving device described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162515.0A CN105840428B (en) | 2016-03-22 | 2016-03-22 | A kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162515.0A CN105840428B (en) | 2016-03-22 | 2016-03-22 | A kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap |
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| Publication Number | Publication Date |
|---|---|
| CN105840428A CN105840428A (en) | 2016-08-10 |
| CN105840428B true CN105840428B (en) | 2018-11-20 |
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| CN201610162515.0A Expired - Fee Related CN105840428B (en) | 2016-03-22 | 2016-03-22 | A kind of adaptive variable pitch vertical axis aerogenerator of the blade with wing flap |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950033A (en) * | 2017-01-24 | 2017-07-14 | 大连理工大学 | A kind of variable angle of attack hydrofoil cavitation water tunnel test system |
| CN110043423B (en) * | 2019-04-04 | 2020-11-10 | 上海理工大学 | Novel vertical axis wind turbine with movable trailing edge blade |
| CN110107455A (en) * | 2019-05-20 | 2019-08-09 | 沈阳航空航天大学 | A kind of fish tail swing formula blade of vertical axis wind turbine |
| CN112128058B (en) * | 2020-09-23 | 2023-01-31 | 中国石油大学(华东) | Efficient and stable variable-inclination-angle H-shaped vertical axis wind turbine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979667A (en) * | 2012-12-28 | 2013-03-20 | 天津市宝坻区同利服装辅料厂 | Wind turbine impeller |
| CN203285619U (en) * | 2013-02-05 | 2013-11-13 | 上海理工大学 | Sectional blade and wind power generator |
| CN103573553A (en) * | 2012-08-10 | 2014-02-12 | 李东林 | Blade incidence-angle-adjustable type vertical-shaft wind turbine |
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2016
- 2016-03-22 CN CN201610162515.0A patent/CN105840428B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573553A (en) * | 2012-08-10 | 2014-02-12 | 李东林 | Blade incidence-angle-adjustable type vertical-shaft wind turbine |
| CN102979667A (en) * | 2012-12-28 | 2013-03-20 | 天津市宝坻区同利服装辅料厂 | Wind turbine impeller |
| CN203285619U (en) * | 2013-02-05 | 2013-11-13 | 上海理工大学 | Sectional blade and wind power generator |
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Granted publication date: 20181120 |